On 21st June, the Sun

[amp_mcq option1=”does not set below the horizon at the Arctic Circle” option2=”does not set below the horizon at the Antarctic Circle” option3=”shines vertically overhead at noon on the Equator” option4=”shines vertically overhead at the Tropic of Capricorn” correct=”option1″]

This question was previously asked in

UPSC IAS – 2019

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Option A is correct. On June 21st, which is the summer solstice in the Northern Hemisphere, the Sun is directly overhead at the Tropic of Cancer (23.5° N). As a result, areas north of the Arctic Circle (66.5° N) experience 24 hours of daylight, meaning the sun does not set below the horizon.

– June 21st is the summer solstice in the Northern Hemisphere.
– The Sun’s rays are vertical over the Tropic of Cancer (23.5° N) on this day.
– Regions north of the Arctic Circle (66.5° N) experience the “midnight sun” (24 hours of daylight).

– On the same day, the Antarctic Circle (66.5° S) experiences 24 hours of darkness because it is winter in the Southern Hemisphere.
– The Sun is directly overhead at the Equator only during the equinoxes (around March 20/21 and September 22/23).
– The Sun is directly overhead at the Tropic of Capricorn (23.5° S) during the winter solstice in the Northern Hemisphere (around December 21/22).

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